The Journal of experimental zoology . imen in the 409th generation, period 32, September I, 1902. Apparently a normalindividual in every respect. Fig. i6. Specimen in the 542d generation, period 36, October 17, 1902. Cytoplasmic vacuoliza-tion begins to appear. Fig. 17. Individual in the 829th generation, period 56, April 29, 1903. Nuclear fragmentationhas begun. Fig. 18. Specimen in the 853d generation, period 62, July 2, 1903. Nuclear and cytoplasmicdegeneration is far advanced. The size of the cell is greatly increased. 632 Lorande Loss Woodruff. Plate III. Fig. 19. Same as Fig. 18, Plate I


The Journal of experimental zoology . imen in the 409th generation, period 32, September I, 1902. Apparently a normalindividual in every respect. Fig. i6. Specimen in the 542d generation, period 36, October 17, 1902. Cytoplasmic vacuoliza-tion begins to appear. Fig. 17. Individual in the 829th generation, period 56, April 29, 1903. Nuclear fragmentationhas begun. Fig. 18. Specimen in the 853d generation, period 62, July 2, 1903. Nuclear and cytoplasmicdegeneration is far advanced. The size of the cell is greatly increased. 632 Lorande Loss Woodruff. Plate III. Fig. 19. Same as Fig. 18, Plate II. Fig. 20. Specimen in the 854th generation, period 62, July 4, 1903. Fig. 21. A double monster from A-i, 238th generation, June 16, 1902. Fig. 22. Orytricha fallax, B-culture. Specimen in the 365th generation, August 25, 1903. Con-dition is normal. Fig. 23. Pleurotricha lanceolata, B-culture. Individual in the 413th generation, January 29, division-stage. THE LIFE-HISTORY OF HYPOTRICHOUS INFUSORIA. L. L. Woodruff. PLATE


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Keywords: ., bookauthorwi, bookcentury1900, bookdecade1900, booksubjectzoology